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CVE-2026-33230

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, `nltk.app.wordnet_app` contains a reflected cross-site scripting issue in the `lookup_...` route. A crafted `lookup_<payload>` URL can inject arbitrary HTML/JavaScript into the response page because attacker-controlled `word` data is reflected into HTML without escaping. This impacts users running the l
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:07d992acf82740bec7b88566a6db8d6209ff8ac587f382b5e9c29a2295792cb3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"nltk","vendor":"nltk","versions":[{"status":"affected","version":"<= 3.9.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nltk/nltk/commit/1c3f799607eeb088cab2491dcf806ae83c29ad8f","tags":["x_refsource_MISC"],"url":"https://github.com/nltk/nltk/commit/1c3f799607eeb088cab2491dcf806ae83c29ad8f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/references/1
{"name":"https://github.com/nltk/nltk/commit/40d0bc1d484a3458d6a63ecb5ba4957ab16ba14e","tags":["x_refsource_MISC"],"url":"https://github.com/nltk/nltk/commit/40d0bc1d484a3458d6a63ecb5ba4957ab16ba14e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/references/2
{"name":"https://github.com/nltk/nltk/security/advisories/GHSA-gfwx-w7gr-fvh7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nltk/nltk/security/advisories/GHSA-gfwx-w7gr-fvh7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc5490a7c1a62974b227a8f95da45b3c77dead602da458631c161d5ab37a77e3 · sha256:6b8a3baea688dd2e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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